DEVICE AND METHOD FOR NOISE REDUCTION

Title:

DEVICE AND METHOD FOR NOISE REDUCTION

Document Type and Number:

Japanese Patent JP2005165021

Kind Code:

A

Abstract:

To perform proper noise suppression even when various background noises such as a bubble noise are present.

The noise reducing device 1 having an analysis part 2 which converts an input to a signal of a frequency region, a suppression part 3 which suppresses the signal, and a composition part 4 which composes a signal of a time region is equipped with a means 5 of estimating at least information to be made to correspond to a pure speech component except noise components in an input speech signal as speech information on which suppression gain calculation of a signal is based by using the output of the analysis part 2 and a means 6 of calculating a suppression gain corresponding to the outputs of the means 5 and analysis part 2 and supplying it to the suppression part 3.

Inventors:

ENDOU KAORI
OTANI TAKESHI
MATSUBARA MITSUYOSHI
OTA TAKASHI

Application Number:

JP2003404595A

Publication Date:

June 23, 2005

Filing Date:

December 03, 2003

Export Citation:

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Assignee:

FUJITSU LTD

International Classes:

G10L15/20; G10L21/0208; G10L21/0232; H03M7/30; H04M1/00; (IPC1-7): G10L21/02; G10L15/20; H03M7/30; H04M1/00

Domestic Patent References:

JPH04340599A	1992-11-26
JP2000047697A	2000-02-18
JP2000330597A	2000-11-30
JPH05204395A	1993-08-13

Attorney, Agent or Firm:

Yoshiyuki Osuga
Motoaki Hisagi

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